Geological Survey Bulletin lowercasetitle

Alden, W.C., 1932, Physiography and glacial geology of eastern Montana and adjacent areas: U.S. Geological Survey Professional Paper 174, 133 p.

Bluemle, J.P., 1988, North Dakota Geological Highway Map: North Dakota Geological Survey.

Bluemle, J.P., 1977, The face of North Dakota—the geologic story: North Dakota Geological Survey Education Series 11, 73 p.

Colton, R.B., Lemke, R.W., and Lindvall, R.M., 1961, Glacial map of Montana east of the Rocky Mountains: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-327.

Colton, R.B., Lemke, R.W., and Lindvall, R.M., 1963, Preliminary glacial map of North Dakota: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-331.

Curtis, B.F., ed., 1975, Cenozoic history of the southern Rocky Mountains—Papers deriving from a symposium presented at Rocky Mountain Section meeting of the Geological Society of America, Boulder, Colorado, 1973: Geological Survey of America Memoir 144, 279 p.

Darton, N.H., 1905, Preliminary report on the geology and underground water resources of the central Great Plains: U.S. Geological Survey Professional Paper 32, 433 p.

Flint, R.F., 1955, Pleistocene geology of eastern South Dakota: U.S. Geological Survey Professional Paper 262, 173 p.

Frye, J.C., and Leonard, A.B., 1965, Quaternary of the southern Great Plains, in Wright, H.E., Jr., and Frey, D.G., eds., The Quaternary of the United States—A review volume for the 7th Congress of the International Association of Quaternary Research: Princeton University Press, p. 203-216.

Howard, A.D., 1958, Drainage evolution in northeastern Montana and northwestern North Dakota: Geological Society of America Bulletin, v. 69, no. 5, p. 575-588.

Johnson, R.B., 1961, Patterns and origin of radial dike swarms associated with West Spanish Peak and Dike Mountain south-central Colorado: Geological Society of America Bulletin v. 72, no. 4, p. 579-590.

Judson, S.S., Jr., 1950, Depressions of the northern portion of the southern High Plains of eastern New Mexico: Geological Society of America Bulletin, v. 61, no. 3, p. 253-274.

Keech, C.F., and Bentall, Ray, 1971, Dunes on the plains—The Sand Hills region of Nebraska: Nebraska University Conservation and Survey Division Resources Report 4, 18 p.

Lemke, R.W., Laird, W.M., Tipton, M.J., and Lindvall, R.M., 1965, Quaternary geology of northern Great Plains, in Wright, H.E., Jr., and Frey, D.G., eds., The Quaternary of the United States—A review volume for the 7th Congress of the International Association for Quaternary Research: Princeton University Press, p. 15-27.

Mansfield, G.R., 1907, Glaciation in the Crazy Mountains of Montana: Geological Society of America Bulletin, v. 19, p. 558-567.

Oetking, P.; Renfro, H.B.; Feray, D.E.; and Bennison, A.P.; Geological Highway Maps for the Regions: Great Plains; Mid-Continent; and Texas.

Pettyjohn, W.A., 1966, Eocene paleosol in the northern Great Plains, in Geological Survey Research 1966: U.S. Geological Survey Professional Paper 550-C, p. C61-C65.

Robinson, C.S., 1956, Geology of Devils Tower National Monument, Wyoming: U.S. Geological Survey Bulletin 1021-I, p. 289-302.

Stormer, J.C., Jr., 1972, Ages and nature of volcanic activity on the southern High Plains, New Mexico and Colorado: Geological Society of America Bulletin, v. 83, no. 8, p. 2443-2448.

Strahler, A.N., and Strahler, A.H., 1978, Modern physical geography: New York, John Wiley & Sons, 502 p.

Thornbury, W.D., 1965, Regional geomorphology of the United States: New York, John Wiley, 609 p.

Wright, H.E., Jr., 1970, Vegetational history of the Central Plains, in Pleistocene and recent environments of the central Great Plains: Kansas University Department of Geology Special Publication 3, p. 157-172.